is a typical command. It creates a FS image for our erase block size of 16k, padded to 0x700000 bytes in length from the files contained in the /tmp/jffsroot directory and stores the FS image in rootfs.jffs2.

Using total_size=59024 will set the filesystem size to the available space on /dev/mtd4 of the GTA1 device. So when you copy the image back it will be about 58 MB. You can set this to smaller values though.

Be careful to really use the mtd-ram-disk (maybe there is a real Flash-device somewhere in your development system)

is a typical command. It creates a FS image for our erase block size of 16k, padded to 0x700000 bytes in length from the files contained in the /tmp/jffsroot directory and stores the FS image in rootfs.jffs2.

Using total_size=59024 will set the filesystem size to the available space on /dev/mtd4 of the GTA1 device. So when you copy the image back it will be about 58 MB. You can set this to smaller values though.

Be careful to really use the mtd-ram-disk (maybe there is a real Flash-device somewhere in your development system)